<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54ca90eec8c4f_-_biodiesel-470-3-1009-99860334.jpg>
<http://www.popularmechanics.com/cars/hybrid-electric/a4717/4332200/?click=main_sr>